A modern take on that classic bicycle design.
Step 1: Starting the Frame
Step 2: Bending the Forks
IMPORTANT: Unless you are tall (like me) you may need to bend the top-tube and down-tube of the frame in to make it smaller - in this case you will have to cut the frame first.
Step 3: Cutting the Frame and Forks
Step 4: Joining the Frame
Step 5: The Armature
It was bent using a hydraulic tube bender. If you are lucky, you may find some scrap that is already bent to a suitable shape.
I welded the headtube in before I did the second bend, so that I could assess the shape more easily.
Step 6: Finishing the Frame
A footpeg, made from scrap tubing, can also be added.
The saddle also needs to be considered. I wanted mine above the head tube so that I could slide off forwards to dismount. It also needs to be placed so that your weight is evenly distributed.
Step 7: Handlebars
You could just put normal handlebars back in the steerer tube, but if you fall forwards, be prepared for a face-plant!
Other pennyfakething designs have the handlebars welded to the front frame section and are positioned under the seat. In this case, the rider has to 'step round' the bars when they mount the bike, so that the bars are below their legs.
The stepthrough bars were cut from the legs of an office chair, and needed a small ammout of bending to get the shape right.
They are held in a handlebar stem that has been welded into the seat tube. I found that clamping them was not strong enough.
Step 8: Riding
I found the best way to learn, was to scoot the thing along, and ride on the footpeg to gain confidence.
Then you have to go for it. Check it is in a low gear, and that your life insurance is up to date.